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US2670818A
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Method of erecting cupola structures
Assignee: ESSLINGEN A G MASCHF
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Filing: 1949-12-03
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Granted: 1954-03-02
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Expires: 1969-12-03
Abstract
No abstract record available.
Inventors
- 👤 Hacker Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:06
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/32; E04B1/3211; E04B1/343; E04B1/344; E04B1/3441; E04B1/35; E04B1/3544; F; F16; F16D; F16D49/00; F16D49/16; E04B2001/3217; F16D65/00; F16D65/02; F16D2065/024; Y; Y10; Y10S; Y10S135/00; Y10S135/905; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49828
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |